Book-stack.



PATENTED NOV. 29, 1904.

B. R. GREEN 6; H. P. MACDONALD, JR.

BOOK STACK.

APPLIOATIOI TILED IA]. 9, 1904.

no 110mm.

r we

'30 -B B of Fig. 1.

"similar views, including a modified form of partitions and shelves.

' UNITED STATES Patented November 29, 1904.

PATENT OFFICE.

BERNARD R. GREEN, OF \YASHINGTON, DISTRICT OF COLUMBIA, AND HARRY I. MACDONALD. J R., OF JERSEY CITY, NEW JERSEY: SAID MACDONALD, JR., ASSIGNOR TO SAID GREEN.

BOOK-STACK.

. V SPECIFICATION forming part of Letters Patent N 0. 776,233, dated November 29, 1904.

Application filed January 9, 1904. Serial No. 188,343. No model.)

.To all whom it may concern.- 7 Be it known that we, BBRXARD R. GREEN,

v a resident of 'ashington, in the District of "Columbia, and IIARRY P. MACDONALD, J r., a

resident of Jersey City, in the county of Hudl'icat-ion.

This invention relates to book-stacks, and

"more particularly to means for supporting the fronts of the shelves, with the object in 'view of guarding against the lateral displacement of the bearings carried by the shelves whether the partitions be thick or thin and at the same time when so desired providing 1 against the forward displacementof the shelves withoutthe necesslty of hooking or otherwise securlng them at or near the rear edge, as has hitherto been common.

Our invention further contemplates the employment of partitions formed wholly or partly of thin sheet metal in such form as to coact v with the bearings carried by the shelves.

. 25.- In the accompanying drawings, Figure 1- is a partial front view of a partition and two adJacent shelves of a book-stack embodying our invention.

Fig. 2 is a vertical section in {the plane of the line A A of Fig. 1. Fig. 3 is a horizontal section in the plane of the line Figs. 4, 5, and 6 represent similar views, including a third form of partition. including a fourth form of partition. Figs.

Figs. 10, 11, and 12 are similar views,

13, 1-1, and 15 are similar views, including a.

fifth form of partition; and Fig. 16 represents a modified form of bearing carried by the shelf.

In the several groups of figures representing the various forms of partitions, with the exception of the roup numbered 4, 5, and 6, the shelves are indicated as formed. of sheet metal with a depending flange and are denoted by 1 and 2 and their flanges by 3 and 4, respectively.

The vertical partition between two shelves or tiers of shelves (for it is to be understood Figs. 7 8, and 9 are that the shelves 1 and 2 are each a single member of a vertical tier or bank of shelves of the same size and construction) is denoted in Figs. 1, .2, and 3 by 5 and consists of a sheet or plate of metal bent into a flat U shape in horizontal section with the bight of the U disposed toward the front and provided with a series of perforations 6, preferably rectangular in shape and adapted to receive the bearings carried by the shelves.

The bearings'carried by the shelves consist of Lshaped pieces of metal 7, disposed edgewise up and down and having one leg secured to the front of the shelf and the other extended rearwardly to enter an opening 6 in the front of the partition. The leg which enters the opening in the partition maybe either plain, as shown at 8, Fig. 16, or hooked, as shown at 9. Fig. :2. If hooked, as at 9, the hearing will prevent the shelf from both longitudinal and forward displacement whether the shelf be hooked or fastened at its rear or not, and when plain, as at 8, it will prevent the shelf from longitudinal displacement only and other meanssuch, for example, as the means shown and described in Reissue Patent- No. 11,401, dated January 30, 1891, to Bernard R. Grecn-may be employed to prevent forward displacement. It is intended that the adjacent ends of shelves shall each be provided with an L- shaped hearing, such as hereinabove described, and their rearwardly-extended legs may enter the same opening 6 in the partition. and the partition need be only thick enough to admit the two rearlegs of the bearings, as the walls of the partition will prevent the said legs from displacement in the longitudinal direction of the shelf.

In Figs. 4, 5, and 6 the partition is repre sented as made up of a solid part 10 and a U-shaped part 11 at the front, having its sides let'into the opposite sides of the solid part and secured thereto. The U-shaped front is provided with openings 12,. similar to the open- .ings 6, hereinabove described, and the shelves,

here shown as of the grid form and denoted by 13 and, 14 are provided with bearinghooks similar in all respects to those shown in Figs. 1 to 3.

In the form shown in Figs. 7, 8, and 9 the partition is composed of a solid'part and a skeleton front part. consisting of two strips of thin metal 16 and 17., let in'tothe opposite sides of the part 15 and projecting forward from its front edge. The strips 16 and 17 are connected at frequent intervals by pins 18, which serve to support the hooks attached to the shelves, as described above.

In the form shown in Figs. 10, 11, and 12 the partition (denoted by 19).is solid and is provided with sockets 20 in itsfront edge, the sockets being provided with a ledge 21 to coact with the bearing-hook.

In the form shown in Figs. 13, 14, and 15 the partition (denoted by 22) is solid and is provided with two vertical series of sockets 23 24, the former to receive the bearing-hook of one shelf and the latter to receive the bearing-hook of a horizontally-adjacent shelf.

The bearing-hooks instead of consisting of a simple L-shaped piece of metal may be formed of a folded piece, as shown in Fig. 9, one of the parts being made fast at the front i of the shelf, as at 25, and the other at the end of the shelf, as at -26.-

The particular structure of the body of the shelf is not material to the present invention.

lVhat we claim is- 1. In a book-stack, the combination with a partition having openings in its front, of shelves provided with rearwardly-projecting bearings adapted to enter the said openings to support the fronts of the shelves.

2. In a book-stack, the combination with a partition provided with openings in its front,

of shelves provided with rearwardly-extended hooked bearings adapted to enter the said openings to hold the fronts of the shelves in position. j'

3. In a book-stack, the combination with a partition terminating at its front in thin metal walls spaced apart and provided with a vertical series of openings at the front, of shelves provided with rearwardly-extending bearings adapted to enter the said openings and rest on the bottoms thereof.

4. In a book-stack, the combination with a partition terminating at the front in thin metal walls U-shaped in horizontal section and provided with a series of openings in the bight of the said J-shaped part, of shelves provided with bearings adapted to enter said openings to support the shelves.

5. In a book-stack, the combination with a partition formed of thin metal flat U-shaped in horizontal section and provided with a vertical series of openings at its front, of shelves provided with bearings adapted to enter the said openings to support the shelf.

In testimony that we claim the foregoing as our joint invention we have signed our names in presence of two witnesses.

BERNARD R. GREEN. HARRY P. MACDONALD, JR.

'itnesses to signature of Bernard R. Green, Janna-y 6, 1901:

Geo. N. FRENCH, R. B. SEWARD.

\Vitnesses to signature of Harry'P. Macdonald, J 1'., January T, 190 1:

FnEDK. HAYNES, C. S. SUNDGREN. 

